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Finding the Fourth Proportional to 66,786.84, 100,217.15 and 37,221.34

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Solution

The fourth proportional to 66,786.84, 100,217.15 and 37,221.34 is: 55,852.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,786.84 : 100,217.15 = 37,221.34 : x
  2. Step 2: Convert to fraction form
    66,786.84/100,217.15 = 37,221.34/x
  3. Step 3: Cross multiply
    66,786.84x = 100,217.15 × 37,221.34
  4. Step 4: Simplify right side
    66,786.84x = 3,730,216,456.49
  5. Step 5: Solve for x
    x = 3,730,216,456.49/66,786.84
  6. Step 6: Final answer
    x = 55,852.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.